This game is also known as "Kicker", and known in Japan as 'Shourinjihe no Michi' (translates from Japanese as 'Shaolin Road').

Attack enemies when they are moving from floor to floor : When enemies are moving from floor to floor is a great opportunity to attack them! Attack them when they have landed!

More points with jump kicks : You get 200 points if you take out an enemy. If you do so with a jump kick, you get 500 points! Take multiple enemies out at once and you get more points.

Push bosses out of the screen : If you attack a boss and push him out of the screen, you can send him to the other side of the screen.

Bring back the iron ball : After shooting an iron ball, press the control pad in the opposide direction to bring it back.

You can pick up iron balls : If the time limit comes when you have an iron ball, the iron ball turns back to Ball 1 and flies away. Make use of this and press the kick button right before the time limit. The iron ball you have kicked turns back to Ball 1 at an ideal position and you can pick it up.

Go for the green enemy : There are a bunch of enemies carrying items. Take them out and obtain all those items.

Jump at heights : You incur damage if you get to a height difference while walking. If you jump and go down, you take no damage.